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1. 发明授权

US07769303B2 Apparatus and method for generating return-to-zero signal 失效
标题翻译：用于产生归零信号的装置和方法
公开(公告)号：US07769303B2
公开(公告)日：2010-08-03
申请号：US11635712
申请日：2006-12-07
申请人： Seung Il Myong , Hyung Joo Kim , Jong Hyun Lee
发明人： Seung Il Myong , Hyung Joo Kim , Jong Hyun Lee
IPC分类号： H04B10/04
CPC分类号： H04B10/5051 , H04B10/505 , H04B10/508
摘要： Provided are an apparatus and a method for generating a return-to-zero (RZ) signal, including: a first modulator receiving a first signal having a predetermined frequency to modulate, compensate for and output a first laser beam; a second modulator receiving a second signal complementary to the first signal to modulate, compensate for, and output a second laser beam; a mixer mixing signals output from the first and second modulators to output a third signal; and a third modulator modulating the third signal into an RZ signal and outputting the RZ signal.
摘要翻译：提供了一种用于产生归零（RZ）信号的装置和方法，包括：第一调制器，接收具有预定频率的第一信号以调制，补偿和输出第一激光束; 接收与所述第一信号互补的第二信号以调制，补偿和输出第二激光束的第二调制器; 混合从第一和第二调制器输出的信号以输出第三信号; 以及将第三信号调制成RZ信号并输出RZ信号的第三调制器。

2. 发明授权

US07313333B2 Apparatus for controlling decision threshold voltage to optical receiver 失效
标题翻译：用于控制光接收机的判定阈值电压的装置
公开(公告)号：US07313333B2
公开(公告)日：2007-12-25
申请号：US10815064
申请日：2004-03-31
申请人： Jyung Chan Lee , Seung Il Myong , Joon Ki Lee , Kwang Joon Kim
发明人： Jyung Chan Lee , Seung Il Myong , Joon Ki Lee , Kwang Joon Kim
IPC分类号： H04B10/06
CPC分类号： H04B10/695
摘要： Disclosed herein is an apparatus for controlling a decision threshold voltage to an optical receiver, which is capable of automatically controlling the decision threshold voltage to the optical receiver appropriately to signal level decision on the basis of a low-frequency band signal component of an output signal from the optical receiver. The apparatus is adapted to control the level of the decision threshold voltage to the optical receiver, which converts an input optical signal into an electrical signal. To this end, the apparatus comprises a voltage detector for branching off part of the output signal from the optical receiver and detecting a corresponding voltage, a differential comparator for comparing the voltage detected by the voltage detector with a reference voltage inputted thereto and outputting the resulting differential voltage, a low pass filter for filtering the differential voltage from the differential comparator at a predetermined low frequency band and supplying the resulting voltage as the threshold voltage to the optical receiver, and a voltage controller for controlling the reference voltage to the differential comparator on the basis of a differential voltage between the threshold voltage from the low pass filter and a predetermined voltage corresponding to a predetermined minimum bit error rate.
摘要翻译：本文公开了一种用于控制光接收机的判定阈值电压的装置，其能够基于输出信号的低频带信号分量自动控制对光接收器的判定阈值电压以适当地进行信号电平判定从光接收机。该装置适于控制光接收器的判定阈值电平的电平，光接收器将输入光信号转换为电信号。为此，该装置包括用于将来自光接收器的输出信号的一部分分支并检测相应电压的电压检测器，用于将由电压检测器检测到的电压与输入到其的参考电压进行比较的差分比较器，差分电压，低通滤波器，用于在预定的低频带对差分比较器的差分电压进行滤波，并将得到的电压作为阈值电压提供给光接收器;以及电压控制器，用于控制差分比较器的参考电压来自低通滤波器的阈值电压与对应于预定最小误码率的预定电压之间的差分电压的基础。

3. 发明授权

US08787514B2 Apparatus and method for generating pseudo noise code 有权
标题翻译：用于产生伪噪声码的装置和方法
公开(公告)号：US08787514B2
公开(公告)日：2014-07-22
申请号：US13003374
申请日：2008-12-31
申请人： Seung Il Myong , Jong Sub Cha , Sang Hyun Mo , Jae Heum Lee , Heyung Sub Lee , Jong Suk Chae
发明人： Seung Il Myong , Jong Sub Cha , Sang Hyun Mo , Jae Heum Lee , Heyung Sub Lee , Jong Suk Chae
IPC分类号： H04L27/10
CPC分类号： H04J13/10 , H04B1/707 , H04J13/0022
摘要： An apparatus and method of generating a pseudo noise (PN) code is provided. The apparatus for generating the PN code includes: a memory device unit including a plurality of memory devices; an exclusive-OR (XOR) operation unit receiving output values of at least two memory devices among output values of the plurality of memory devices to output an XOR operation value with respect to the received output values; and a PN code generation unit generating the PN code based on an output value of the XOR operation unit.
摘要翻译：提供了一种产生伪噪声（PN）码的装置和方法。用于产生PN码的装置包括：包括多个存储装置的存储装置单元; 异或（XOR）操作单元，在多个存储器件的输出值之间接收至少两个存储器件的输出值，以相对于所接收的输出值输出异或运算值; 以及PN代码生成单元，其基于所述异或运算单元的输出值生成所述PN码。

4. 发明授权

US07212741B2 Method of optimizing output signal of optical receiver using FEC and optical receiving system using the method 失效
标题翻译：使用该方法优化使用FEC和光接收系统的光接收机输出信号的方法
公开(公告)号：US07212741B2
公开(公告)日：2007-05-01
申请号：US10436909
申请日：2003-05-13
申请人： Seung Il Myong , Jyung Chan Lee , Je Soo Ko
发明人： Seung Il Myong , Jyung Chan Lee , Je Soo Ko
IPC分类号： H04B10/08 , H04B10/06
CPC分类号： H04B10/695 , H04B10/0799 , H04B10/69 , H04L1/0047 , H04L25/063
摘要： Optical signals transmitted through an optical cable are converted into digital data of bits “1” and “0” on the basis of a reference voltage, and errors generated during transmission of the optical signals are corrected using Forward Error Correction (FEC). A method includes extracting numbers of occurrence of errors for bits “1” and “0” recovered through the FEC. Thereafter, the extracted numbers of occurrence of errors for bits “1” and “0” are compared with each other. A reference voltage used to judge levels of the signals to be level “1” or “0” is controlled if the numbers of occurrence of errors for bits “1” and “0” are not equal to each other. The current reference voltage is maintained if the numbers of occurrence of errors for bits “1” and “0” are rendered equal to each other.
摘要翻译：通过光缆发送的光信号基于参考电压被转换成位“1”和“0”的数字数据，并且使用前向纠错（FEC）校正在光信号的传输期间产生的错误。一种方法包括提取通过FEC恢复的比特“1”和“0”的错误出现次数。此后，将提取的位“1”和“0”的错误出现次数进行比较。如果位“1”和“0”的错误出现次数不相等，则控制用于判断信号为“1”或“0”电平的参考电压。如果将比特“1”和“0”的错误出现次数相等，则保持当前参考电压。

5. 发明授权

US08442167B2 Multistage channel estimation method and apparatus 有权
标题翻译：多级信道估计方法及装置
公开(公告)号：US08442167B2
公开(公告)日：2013-05-14
申请号：US12746431
申请日：2008-07-29
申请人： Seung Il Myong , Hoe-Sung Yang , Dong-Beom Shin , Nak Seon Seong , Heyung Sub Lee , Cheol Sig Pyo
发明人： Seung Il Myong , Hoe-Sung Yang , Dong-Beom Shin , Nak Seon Seong , Heyung Sub Lee , Cheol Sig Pyo
IPC分类号： H04B1/10
CPC分类号： H04L27/0014 , H04L25/0212
摘要： A multistage channel estimation method and apparatus is provided. The multistage channel estimation method includes: receiving a data frame to compensate for a distortion of the data frame based on a first channel estimation value associated with a corresponding section of the data frame; a first step of changing the corresponding section to calculate a second channel estimation value associated with the changed section; a second step of updating the first channel estimation value based on the calculated second channel estimation value; a third step of compensating for the distortion of the data frame based on the updated first channel estimation value to count a number of compensations; and repeating the first step through the third step, when the counted number of compensations does not match a predetermined numerical value.
摘要翻译：提供了一种多级信道估计方法和装置。多级信道估计方法包括：基于与数据帧的相应部分相关联的第一信道估计值，接收数据帧以补偿数据帧的失真; 改变相应部分以计算与改变部分相关联的第二信道估计值的第一步骤; 基于计算出的第二信道估计值更新第一信道估计值的第二步骤; 基于更新的第一信道估计值来补偿数据帧的失真以对多个补偿进行计数的第三步骤; 并且当计数的补偿次数与预定数值不匹配时，重复第一步骤到第三步骤。

6. 发明申请

US20120032844A1 REAL-TIME LOCATION TRACKING APPARATUS AND METHOD USING GLOBAL POSITIONING SYSTEM (GPS) SIGNAL RELAY TAG 审中-公开
标题翻译：实时位置追踪装置和使用全球定位系统（GPS）信号继电器标签的方法
公开(公告)号：US20120032844A1
公开(公告)日：2012-02-09
申请号：US13195391
申请日：2011-08-01
申请人： Sang Hyun Mo , Heyung Sub Lee , Jae Heum Lee , Cheol Sig Pyo , Kang Bok Lee , Dong Beom Shin , Seung Il Myong , Joo Sang Park , Hoe Sung Yang , Jong Suk Chae
发明人： Sang Hyun Mo , Heyung Sub Lee , Jae Heum Lee , Cheol Sig Pyo , Kang Bok Lee , Dong Beom Shin , Seung Il Myong , Joo Sang Park , Hoe Sung Yang , Jong Suk Chae
IPC分类号： G01S19/09
CPC分类号： G01S19/09 , G01S5/0027 , G01S5/0036 , G01S5/0284
摘要： Real-time location tracking apparatus and method using a global positioning system (GPS) signal relay tag is provided. Here, a tag may receive a GPS signal and transmit the received GPS signal to a reader, and the reader may calculate a location of the tag, and thereby a real-time location tracking service may be provided.
摘要翻译：提供了使用全球定位系统（GPS）信号中继标签的实时位置跟踪装置和方法。这里，标签可以接收GPS信号并将接收的GPS信号发送到读取器，并且读取器可以计算标签的位置，从而可以提供实时位置跟踪服务。

7. 发明申请

US20100253483A1 FREIGHT CONTAINER CARGO-WORKING MANAGEMENT SYSTEM AND METHOD USING RFID TECHNOLOGY 审中-公开
标题翻译：使用RFID技术的货运集装箱货物管理系统和方法
公开(公告)号：US20100253483A1
公开(公告)日：2010-10-07
申请号：US12676771
申请日：2008-05-23
申请人： Hoe-Sung Yang , Dong-Beom Shin , Seung Il Myong , Heyung Sub Lee , Gil Young Choi , Cheol Sig Pyo
发明人： Hoe-Sung Yang , Dong-Beom Shin , Seung Il Myong , Heyung Sub Lee , Gil Young Choi , Cheol Sig Pyo
IPC分类号： H04Q5/22
CPC分类号： G06Q10/08
摘要： A freight container cargo-working management system and method which can use Radio Frequency Identification (RFID) technology for displaying a cargo-working location of a container by recognizing an RFID tag adhered to a container vehicle passing through a warehouse entrance is provided. A freight container cargo-working management system including: an RFID tag to include freight information and be adhered to a container; an RFID reader to be installed at a warehouse entrance for recognizing the freight information included in the RFID tag; a cargo-working location information transmitter to be installed at the warehouse entrance for wirelessly transmitting cargo-working location information of the container corresponding to the freight information recognized by the RFID reader; and a cargo-working location display to be included in a vehicle with the container attached for displaying the cargo-working location information wirelessly transmitted from the cargo-working location information transmitter.
摘要翻译：提供了一种货物集装箱货物管理系统和方法，其可以使用射频识别（RFID）技术来识别附着在通过仓库入口的集装箱车辆上的RFID标签来显示集装箱的货物工作位置。货物集装箱货运管理系统，包括：RFID标签，包括货运信息，并附在容器上; 将要安装在仓库入口处的用于识别RFID标签中包含的货运信息的RFID读取器; 在仓库入口处安装货物处理位置信息发送器，用于无线地传送与由RFID读取器识别的货运信息对应的容器的货物工作位置信息; 以及包含在车辆中的货物工作位置显示器，其中附接有用于显示从货物工作位置信息发送器无线发送的货物工作位置信息的容器。

8. 发明授权

US07471896B2 Optical transponder and method for detecting and treating errors in optical channel sublayer of the optical transponder 有权
标题翻译：用于检测和处理光学应答器的光通道子层中的错误的光学应答器和方法
公开(公告)号：US07471896B2
公开(公告)日：2008-12-30
申请号：US10903053
申请日：2004-07-30
申请人： Yun Hee Cho , Joon Ki Lee , Seung Il Myong , Jyung Chan Lee , Kwangjoon Kim
发明人： Yun Hee Cho , Joon Ki Lee , Seung Il Myong , Jyung Chan Lee , Kwangjoon Kim
IPC分类号： H04B10/08
CPC分类号： H04B10/00
摘要： Provided are an optical transponder that processes a G.709 frame that includes an overhead for operation, administration, and maintenance of an optical channel and an overhead for forward error correction, and a method of detecting and treating errors in optical-channel sublayers of the same. The method includes detecting an error signal or a maintenance signal from a G.709 frame that includes an overhead for operation, administration, and maintenance of an optical channel and an overhead for forward error correction; treating errors in a predetermined layer of a plurality of layers that requires error treatment when the error signal or the maintenance signal is detected or canceled; and investigating a reason for the errors in the predetermined layer.
摘要翻译：提供了一种处理包括用于光信道的操作，管理和维护以及用于前向纠错的开销的开销的G.709帧的光学应答器，以及用于检测和处理光信道子层中的错误的方法相同。该方法包括检测来自G.709帧的误差信号或维护信号，该G.709帧包括用于操作，管理和维护光信道的开销和用于前向纠错的开销; 当检测或取消误差信号或维护信号时，处理需要错误处理的多个层的预定层中的错误; 并调查预定层错误的原因。

9. 发明授权

US07075694B2 Apparatus and method for automatically correcting bias voltage for carrier suppressed pulse generating modulator 失效
标题翻译：用于自动校正载波抑制脉冲发生调制器偏置电压的装置和方法
公开(公告)号：US07075694B2
公开(公告)日：2006-07-11
申请号：US10863741
申请日：2004-06-07
申请人： Youn Seon Jang , Kwang Joon Kim , Jyung Chan Lee , Seung Il Myong
发明人： Youn Seon Jang , Kwang Joon Kim , Jyung Chan Lee , Seung Il Myong
IPC分类号： G02B26/00
CPC分类号： H04B10/50595 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/50575 , H04B10/508 , H04B10/5162 , H04B10/5165 , H04B2210/003
摘要： The present invention relates to an apparatus and method for automatically correcting a bias voltage for a carrier suppressed pulse generating modulator using the phase distribution of the output pulses, which automatically detects an optimal bias voltage for the carrier suppressed pulse generating modulator and stabilizes the bias voltage.In the bias voltage automatic correction method and apparatus of the present invention, an optimal bias voltage for the modulator is set to a bias voltage that is obtained when mean power of an optical signal output from the modulator is highest. The varying direction of the bias voltage is detected on the basis of the phase variations in the output optical signal of the modulator according to the bias voltage variations is detected, and the bias voltage is corrected oppositely to the varying direction of the bias voltage.
摘要翻译：本发明涉及一种使用输出脉冲的相位分布自动校正载波抑制脉冲发生调制器的偏置电压的装置和方法，其自动检测载波抑制脉冲发生调制器的最佳偏置电压并稳定偏置电压。在本发明的偏置电压自动校正方法和装置中，将调制器的最佳偏置电压设置为当从调制器输出的光信号的平均功率最高时获得的偏置电压。根据检测到的偏置电压变化，基于调制器的输出光信号的相位变化来检测偏置电压的变化方向，并且偏置电压与偏置电压的变化方向相反地校正。

10. 发明授权

US07049902B2 Tunable high-order bessel low pass filter 有权
标题翻译：可调式高阶贝塞尔低通滤波器
公开(公告)号：US07049902B2
公开(公告)日：2006-05-23
申请号：US10858925
申请日：2004-06-01
申请人： Seung Il Myong , Kwang Joon Kim , Jyung Chan Lee , Sang Kyu Lim
发明人： Seung Il Myong , Kwang Joon Kim , Jyung Chan Lee , Sang Kyu Lim
IPC分类号： H03H7/01 , H03J3/00 , H03J7/02
CPC分类号： H03H7/12
摘要： A tunable high-order Bessel low pass filter which is applied to a multi-rate duobinary generation system of an optical communication system. The tunable Bessel low pass filter comprises a variable inductor circuit including a plurality of variable inductors connected in series between an input signal terminal and an output signal terminal and controlled respectively by corresponding inductance control signals, a variable capacitor circuit including a plurality of variable capacitors connected respectively between corresponding connection nodes of the plurality of variable inductors of the variable inductor circuit and a ground terminal and controlled respectively by corresponding capacitance control signals, and a variable capacitor/inductor controller for outputting the corresponding capacitance control signals to the variable capacitors of the variable capacitor circuit and the corresponding inductance control signals to the variable inductors of the variable inductor circuit on the basis of preset values according to a given data rate, respectively. When the data rate of an application system is changed, the tunable Bessel low pass filter controls its filtering characteristics most appropriately to the changed data rate, so as to extend its application range and enhance performance and efficiency of the application system.
摘要翻译：一种可调谐的高阶贝塞尔低通滤波器，适用于光通信系统的多速率二进制生成系统。可调谐贝塞尔低通滤波器包括可变电感器电路，其包括串联连接在输入信号端子和输出信号端子之间的多个可变电感器，分别由相应的电感控制信号控制，可变电容器电路包括多个连接的可变电容器分别在可变电感器电路的多个可变电感器的相应连接节点和接地端子之间分别由相应的电容控制信号控制;以及可变电容器/电感器控制器，用于将相应的电容控制信号输出到变量的可变电容器电容器电路和相应的电感控制信号分别根据给定的数据速率在可变电感器的可变电感器的基础上进行预设值。当应用系统的数据速率发生变化时，可调式贝塞尔低通滤波器最适合改变数据速率控制其滤波特性，从而扩展其应用范围，提高应用系统的性能和效率。

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